Fix cusor position due to indent guide border adding 1px

Fix #9

dist/nord-polar-night-aurora.rstheme

 
 .ace_indent-guide {
   border-right: 1px solid #3b4252;
+  margin-right: -1px;
 }
 
 .ace_active-line ~ .ace_selection.ace_start {

dist/nord-snow-storm.rstheme

 
 .ace_indent-guide {
   border-right: 1px solid #d8dee9;
+  margin-right: -1px;
 }
 
 .ace_active-line ~ .ace_selection.ace_start {

dist/oceanic-plus.rstheme

 
 .ace_indent-guide {
   border-right: 1px solid #4F5B66;
+  margin-right: -1px;
 }
 
 .ace_active-line ~ .ace_selection.ace_start {

dist/one-dark.rstheme

 
 .ace_indent-guide {
   border-right: 1px solid rgba(171, 178, 191, 0.35);
+  margin-right: -1px;
 }
 
 .ace_active-line ~ .ace_selection.ace_start {

dist/one-light.rstheme

 
 .ace_indent-guide {
   border-right: 1px solid rgba(56, 58, 66, 0.3);
+  margin-right: -1px;
 }
 
 .ace_active-line ~ .ace_selection.ace_start {

dist/solarized-dark.rstheme

 
 .ace_indent-guide {
   border-right: 1px solid #586e75;
+  margin-right: -1px;
 }
 
 .ace_active-line ~ .ace_selection.ace_start {

dist/solarized-light.rstheme

 
 .ace_indent-guide {
   border-right: 1px solid #eee8d5;
+  margin-right: -1px;
 }
 
 .ace_active-line ~ .ace_selection.ace_start {

src/rstudio/_rstudio-dark.scss

 }
 .ace_indent-guide{
 	border-right: 1px solid $ui-indent_guide;
+	margin-right: -1px;
 }
 .ace_active-line ~ .ace_selection.ace_start {
 	background-color: $ui-line-active-selection;

src/rstudio/_rstudio-light.scss

 }
 .ace_indent-guide{
 	border-right: 1px solid $ui-indent_guide;
+	margin-right: -1px;
 }
 .ace_active-line ~ .ace_selection.ace_start {
 	background-color: $ui-line-active-selection;